// Shell.cpp : Defines the entry point for the application.
//

#include "stdafx.h"

#include "MainWindow.h"

#include "Shell.h"

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;								// current instance
TCHAR szTitle[MAX_LOADSTRING];					// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name

namespace
{
	HWND hMainWnd = NULL;
}

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;

	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_SHELL, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow))
	{
		return FALSE;
	}

	// Initialize my application
	CMainWindow app;
	app.Initialize(hMainWnd);

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_SHELL));

	// Main message loop:
	while (true)
	{
		if (::PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
		{
			if (WM_QUIT == msg.message)
			{
				break;
			}

			if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
			{
				TranslateMessage(&msg);
				DispatchMessage(&msg);
			}
		}

		app.Loop();
	}

	return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage are only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_SHELL));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= NULL;
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   hMainWnd = hWnd;

   //ShowWindow(hWnd, nCmdShow);
   //UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	case WM_NCLBUTTONDOWN:
		{
			LONG LHotspot = (LONG)wParam;
			switch (LHotspot)
			{
			case HTCAPTION:
				{
					POINT pt;
					pt.x = LOWORD(lParam);
					pt.y = HIWORD(lParam);
					CMainWindow::OnCaption(pt);
				}
				break;
			case HTTOP:
			case HTBOTTOM:
			case HTLEFT:
			case HTRIGHT:
			case HTBOTTOMLEFT:
			case HTBOTTOMRIGHT:
			case HTTOPLEFT:
			case HTTOPRIGHT:
				{
					POINT pt;
					pt.x = LOWORD(lParam);
					pt.y = HIWORD(lParam);
					CMainWindow::OnBorder(LHotspot, pt);
					SetCapture(hWnd);
				}
				break;
			case HTCLOSE:
				CMainWindow::Close();
				break;
			case HTMINBUTTON:
				CMainWindow::Minimize();
				break;
			case HTMAXBUTTON:
				CMainWindow::Maximize();
				break;
			default:
				break;
			}
		}
		break;
	case WM_NCLBUTTONUP:
		CMainWindow::OnLButtonUp();
		ReleaseCapture();
		break;
	case WM_LBUTTONUP:
		CMainWindow::OnLButtonUp();
		ReleaseCapture();
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}